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Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -07001/*
2 * For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview
3 * I2C address is allways 0xC0.
4 *
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -07005 *
Mauro Carvalho Chehab2e7c6dc2006-04-03 07:53:40 -03006 * Copyright (c) 2005 Mauro Carvalho Chehab (mchehab@infradead.org)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -07007 * This code is placed under the terms of the GNU General Public License
8 *
9 * tea5767 autodetection thanks to Torsten Seeboth and Atsushi Nakagawa
10 * from their contributions on DScaler.
11 */
12
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070013#include <linux/i2c.h>
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -070014#include <linux/delay.h>
Michael Krufkyffbb8072007-08-21 01:14:12 -030015#include <linux/videodev.h>
Michael Krufky8d0936e2007-08-27 21:24:27 -030016#include "tuner-i2c.h"
17#include "tea5767.h"
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070018
Michael Krufky8d0936e2007-08-27 21:24:27 -030019static int debug = 0;
20module_param(debug, int, 0644);
21MODULE_PARM_DESC(debug, "enable verbose debug messages");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070022
Michael Krufky8d0936e2007-08-27 21:24:27 -030023#define PREFIX "tea5767 "
Hans Verkuilfac9e892006-01-09 15:32:40 -020024
Michael Krufkydb8a6952007-08-21 01:24:42 -030025struct tea5767_priv {
26 struct tuner_i2c_props i2c_props;
Michael Krufky8d0936e2007-08-27 21:24:27 -030027
28 u32 frequency;
Michael Krufkydb8a6952007-08-21 01:24:42 -030029};
30
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070031/*****************************************************************************/
32
33/******************************
34 * Write mode register values *
35 ******************************/
36
37/* First register */
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -070038#define TEA5767_MUTE 0x80 /* Mutes output */
39#define TEA5767_SEARCH 0x40 /* Activates station search */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070040/* Bits 0-5 for divider MSB */
41
42/* Second register */
43/* Bits 0-7 for divider LSB */
44
45/* Third register */
46
47/* Station search from botton to up */
48#define TEA5767_SEARCH_UP 0x80
49
50/* Searches with ADC output = 10 */
51#define TEA5767_SRCH_HIGH_LVL 0x60
52
53/* Searches with ADC output = 10 */
54#define TEA5767_SRCH_MID_LVL 0x40
55
56/* Searches with ADC output = 5 */
57#define TEA5767_SRCH_LOW_LVL 0x20
58
59/* if on, div=4*(Frf+Fif)/Fref otherwise, div=4*(Frf-Fif)/Freq) */
60#define TEA5767_HIGH_LO_INJECT 0x10
61
62/* Disable stereo */
63#define TEA5767_MONO 0x08
64
65/* Disable right channel and turns to mono */
66#define TEA5767_MUTE_RIGHT 0x04
67
68/* Disable left channel and turns to mono */
69#define TEA5767_MUTE_LEFT 0x02
70
71#define TEA5767_PORT1_HIGH 0x01
72
Hans Verkuil27487d42006-01-15 15:04:52 -020073/* Fourth register */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070074#define TEA5767_PORT2_HIGH 0x80
75/* Chips stops working. Only I2C bus remains on */
76#define TEA5767_STDBY 0x40
77
78/* Japan freq (76-108 MHz. If disabled, 87.5-108 MHz */
79#define TEA5767_JAPAN_BAND 0x20
80
81/* Unselected means 32.768 KHz freq as reference. Otherwise Xtal at 13 MHz */
82#define TEA5767_XTAL_32768 0x10
83
84/* Cuts weak signals */
85#define TEA5767_SOFT_MUTE 0x08
86
87/* Activates high cut control */
88#define TEA5767_HIGH_CUT_CTRL 0x04
89
90/* Activates stereo noise control */
91#define TEA5767_ST_NOISE_CTL 0x02
92
93/* If activate PORT 1 indicates SEARCH or else it is used as PORT1 */
94#define TEA5767_SRCH_IND 0x01
95
Hans Verkuil27487d42006-01-15 15:04:52 -020096/* Fifth register */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -070097
98/* By activating, it will use Xtal at 13 MHz as reference for divider */
99#define TEA5767_PLLREF_ENABLE 0x80
100
101/* By activating, deemphasis=50, or else, deemphasis of 50us */
102#define TEA5767_DEEMPH_75 0X40
103
104/*****************************
105 * Read mode register values *
106 *****************************/
107
108/* First register */
109#define TEA5767_READY_FLAG_MASK 0x80
110#define TEA5767_BAND_LIMIT_MASK 0X40
111/* Bits 0-5 for divider MSB after search or preset */
112
113/* Second register */
114/* Bits 0-7 for divider LSB after search or preset */
115
116/* Third register */
117#define TEA5767_STEREO_MASK 0x80
118#define TEA5767_IF_CNTR_MASK 0x7f
119
Hans Verkuil27487d42006-01-15 15:04:52 -0200120/* Fourth register */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700121#define TEA5767_ADC_LEVEL_MASK 0xf0
122
123/* should be 0 */
124#define TEA5767_CHIP_ID_MASK 0x0f
125
Hans Verkuil27487d42006-01-15 15:04:52 -0200126/* Fifth register */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700127/* Reserved for future extensions */
128#define TEA5767_RESERVED_MASK 0xff
129
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700130enum tea5767_xtal_freq {
Mauro Carvalho Chehab4ac97912005-11-08 21:37:43 -0800131 TEA5767_LOW_LO_32768 = 0,
132 TEA5767_HIGH_LO_32768 = 1,
133 TEA5767_LOW_LO_13MHz = 2,
134 TEA5767_HIGH_LO_13MHz = 3,
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700135};
136
137
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700138/*****************************************************************************/
139
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700140static void tea5767_status_dump(unsigned char *buffer)
141{
142 unsigned int div, frq;
143
144 if (TEA5767_READY_FLAG_MASK & buffer[0])
145 printk(PREFIX "Ready Flag ON\n");
146 else
147 printk(PREFIX "Ready Flag OFF\n");
148
149 if (TEA5767_BAND_LIMIT_MASK & buffer[0])
150 printk(PREFIX "Tuner at band limit\n");
151 else
152 printk(PREFIX "Tuner not at band limit\n");
153
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700154 div = ((buffer[0] & 0x3f) << 8) | buffer[1];
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700155
156 switch (TEA5767_HIGH_LO_32768) {
157 case TEA5767_HIGH_LO_13MHz:
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700158 frq = (div * 50000 - 700000 - 225000) / 4; /* Freq in KHz */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700159 break;
160 case TEA5767_LOW_LO_13MHz:
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700161 frq = (div * 50000 + 700000 + 225000) / 4; /* Freq in KHz */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700162 break;
163 case TEA5767_LOW_LO_32768:
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700164 frq = (div * 32768 + 700000 + 225000) / 4; /* Freq in KHz */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700165 break;
166 case TEA5767_HIGH_LO_32768:
167 default:
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700168 frq = (div * 32768 - 700000 - 225000) / 4; /* Freq in KHz */
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700169 break;
170 }
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700171 buffer[0] = (div >> 8) & 0x3f;
172 buffer[1] = div & 0xff;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700173
174 printk(PREFIX "Frequency %d.%03d KHz (divider = 0x%04x)\n",
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700175 frq / 1000, frq % 1000, div);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700176
177 if (TEA5767_STEREO_MASK & buffer[2])
178 printk(PREFIX "Stereo\n");
179 else
180 printk(PREFIX "Mono\n");
181
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700182 printk(PREFIX "IF Counter = %d\n", buffer[2] & TEA5767_IF_CNTR_MASK);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700183
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700184 printk(PREFIX "ADC Level = %d\n",
185 (buffer[3] & TEA5767_ADC_LEVEL_MASK) >> 4);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700186
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700187 printk(PREFIX "Chip ID = %d\n", (buffer[3] & TEA5767_CHIP_ID_MASK));
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700188
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700189 printk(PREFIX "Reserved = 0x%02x\n",
190 (buffer[4] & TEA5767_RESERVED_MASK));
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700191}
192
193/* Freq should be specifyed at 62.5 Hz */
Michael Krufky8d0936e2007-08-27 21:24:27 -0300194static int set_radio_freq(struct dvb_frontend *fe,
195 struct analog_parameters *params)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700196{
Michael Krufky8d0936e2007-08-27 21:24:27 -0300197 struct tea5767_priv *priv = fe->tuner_priv;
198 unsigned int frq = params->frequency;
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700199 unsigned char buffer[5];
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700200 unsigned div;
201 int rc;
202
Michael Krufky8d0936e2007-08-27 21:24:27 -0300203 tuner_dbg("radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700204
205 /* Rounds freq to next decimal value - for 62.5 KHz step */
206 /* frq = 20*(frq/16)+radio_frq[frq%16]; */
207
208 buffer[2] = TEA5767_PORT1_HIGH;
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700209 buffer[3] = TEA5767_PORT2_HIGH | TEA5767_HIGH_CUT_CTRL |
210 TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND;
211 buffer[4] = 0;
212
Michael Krufky8d0936e2007-08-27 21:24:27 -0300213 if (params->audmode == V4L2_TUNER_MODE_MONO) {
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700214 tuner_dbg("TEA5767 set to mono\n");
215 buffer[2] |= TEA5767_MONO;
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700216 } else {
217 tuner_dbg("TEA5767 set to stereo\n");
218 }
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700219
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700220 /* Should be replaced */
221 switch (TEA5767_HIGH_LO_32768) {
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700222 case TEA5767_HIGH_LO_13MHz:
Michael Krufky8d0936e2007-08-27 21:24:27 -0300223 tuner_dbg("radio HIGH LO inject xtal @ 13 MHz\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700224 buffer[2] |= TEA5767_HIGH_LO_INJECT;
225 buffer[4] |= TEA5767_PLLREF_ENABLE;
Hans Verkuil27487d42006-01-15 15:04:52 -0200226 div = (frq * (4000 / 16) + 700000 + 225000 + 25000) / 50000;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700227 break;
228 case TEA5767_LOW_LO_13MHz:
Michael Krufky8d0936e2007-08-27 21:24:27 -0300229 tuner_dbg("radio LOW LO inject xtal @ 13 MHz\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700230
231 buffer[4] |= TEA5767_PLLREF_ENABLE;
Hans Verkuil27487d42006-01-15 15:04:52 -0200232 div = (frq * (4000 / 16) - 700000 - 225000 + 25000) / 50000;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700233 break;
234 case TEA5767_LOW_LO_32768:
Michael Krufky8d0936e2007-08-27 21:24:27 -0300235 tuner_dbg("radio LOW LO inject xtal @ 32,768 MHz\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700236 buffer[3] |= TEA5767_XTAL_32768;
237 /* const 700=4000*175 Khz - to adjust freq to right value */
Hans Verkuil27487d42006-01-15 15:04:52 -0200238 div = ((frq * (4000 / 16) - 700000 - 225000) + 16384) >> 15;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700239 break;
240 case TEA5767_HIGH_LO_32768:
241 default:
Michael Krufky8d0936e2007-08-27 21:24:27 -0300242 tuner_dbg("radio HIGH LO inject xtal @ 32,768 MHz\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700243
244 buffer[2] |= TEA5767_HIGH_LO_INJECT;
245 buffer[3] |= TEA5767_XTAL_32768;
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700246 div = ((frq * (4000 / 16) + 700000 + 225000) + 16384) >> 15;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700247 break;
248 }
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700249 buffer[0] = (div >> 8) & 0x3f;
250 buffer[1] = div & 0xff;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700251
Michael Krufkydb8a6952007-08-21 01:24:42 -0300252 if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5)))
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700253 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700254
Michael Krufky8d0936e2007-08-27 21:24:27 -0300255 if (debug) {
Michael Krufkydb8a6952007-08-21 01:24:42 -0300256 if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700257 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
258 else
259 tea5767_status_dump(buffer);
260 }
Michael Krufky8d0936e2007-08-27 21:24:27 -0300261
262 priv->frequency = frq * 125 / 2;
263
264 return 0;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700265}
266
Michael Krufky8d0936e2007-08-27 21:24:27 -0300267static int tea5767_signal(struct dvb_frontend *fe)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700268{
269 unsigned char buffer[5];
270 int rc;
Michael Krufky8d0936e2007-08-27 21:24:27 -0300271 struct tea5767_priv *priv = fe->tuner_priv;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700272
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700273 memset(buffer, 0, sizeof(buffer));
Michael Krufkydb8a6952007-08-21 01:24:42 -0300274 if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700275 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700276
Hans Verkuilf9a91f02006-01-09 15:25:42 -0200277 return ((buffer[3] & TEA5767_ADC_LEVEL_MASK) << 8);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700278}
279
Michael Krufky8d0936e2007-08-27 21:24:27 -0300280static int tea5767_stereo(struct dvb_frontend *fe)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700281{
282 unsigned char buffer[5];
283 int rc;
Michael Krufky8d0936e2007-08-27 21:24:27 -0300284 struct tea5767_priv *priv = fe->tuner_priv;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700285
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700286 memset(buffer, 0, sizeof(buffer));
Michael Krufkydb8a6952007-08-21 01:24:42 -0300287 if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700288 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700289
290 rc = buffer[2] & TEA5767_STEREO_MASK;
291
Michael Krufky8d0936e2007-08-27 21:24:27 -0300292 tuner_dbg("radio ST GET = %02x\n", rc);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700293
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700294 return ((buffer[2] & TEA5767_STEREO_MASK) ? V4L2_TUNER_SUB_STEREO : 0);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700295}
296
Michael Krufky8d0936e2007-08-27 21:24:27 -0300297static int tea5767_get_status(struct dvb_frontend *fe, u32 *status)
298{
299 struct tea5767_priv *priv = fe->tuner_priv;
300 int signal = tea5767_signal(fe);
301 *status = 0;
302
303 if (signal)
304 *status = TUNER_STATUS_LOCKED;
305 if (tea5767_stereo(fe))
306 *status |= TUNER_STATUS_STEREO;
307
308 tuner_dbg("tea5767: Signal strength: %d\n", signal);
309
310 return 0;
311}
312
313static int tea5767_standby(struct dvb_frontend *fe)
Mauro Carvalho Chehab793cf9e2005-09-09 13:03:37 -0700314{
315 unsigned char buffer[5];
Michael Krufky8d0936e2007-08-27 21:24:27 -0300316 struct tea5767_priv *priv = fe->tuner_priv;
Mauro Carvalho Chehab793cf9e2005-09-09 13:03:37 -0700317 unsigned div, rc;
318
319 div = (87500 * 4 + 700 + 225 + 25) / 50; /* Set frequency to 87.5 MHz */
320 buffer[0] = (div >> 8) & 0x3f;
321 buffer[1] = div & 0xff;
322 buffer[2] = TEA5767_PORT1_HIGH;
323 buffer[3] = TEA5767_PORT2_HIGH | TEA5767_HIGH_CUT_CTRL |
324 TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND | TEA5767_STDBY;
325 buffer[4] = 0;
326
Michael Krufkydb8a6952007-08-21 01:24:42 -0300327 if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5)))
Mauro Carvalho Chehab793cf9e2005-09-09 13:03:37 -0700328 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
Michael Krufky8d0936e2007-08-27 21:24:27 -0300329
330 return 0;
Mauro Carvalho Chehab793cf9e2005-09-09 13:03:37 -0700331}
332
Michael Krufky8d0936e2007-08-27 21:24:27 -0300333int tea5767_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700334{
Michael Krufky8d0936e2007-08-27 21:24:27 -0300335 struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
Mauro Carvalho Chehabfd3113e2005-07-31 22:34:43 -0700336 unsigned char buffer[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700337 int rc;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700338
Michael Krufky8d0936e2007-08-27 21:24:27 -0300339 if ((rc = tuner_i2c_xfer_recv(&i2c, buffer, 7))< 5) {
340 printk(KERN_WARNING "It is not a TEA5767. Received %i bytes.\n", rc);
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700341 return EINVAL;
342 }
343
Mauro Carvalho Chehabfd3113e2005-07-31 22:34:43 -0700344 /* If all bytes are the same then it's a TV tuner and not a tea5767 */
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700345 if (buffer[0] == buffer[1] && buffer[0] == buffer[2] &&
346 buffer[0] == buffer[3] && buffer[0] == buffer[4]) {
Michael Krufky8d0936e2007-08-27 21:24:27 -0300347 printk(KERN_WARNING "All bytes are equal. It is not a TEA5767\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700348 return EINVAL;
349 }
350
351 /* Status bytes:
352 * Byte 4: bit 3:1 : CI (Chip Identification) == 0
Mauro Carvalho Chehabf7ce3cc2005-07-12 13:58:55 -0700353 * bit 0 : internally set to 0
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700354 * Byte 5: bit 7:0 : == 0
355 */
Mauro Carvalho Chehab793cf9e2005-09-09 13:03:37 -0700356 if (((buffer[3] & 0x0f) != 0x00) || (buffer[4] != 0x00)) {
Michael Krufky8d0936e2007-08-27 21:24:27 -0300357 printk(KERN_WARNING "Chip ID is not zero. It is not a TEA5767\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700358 return EINVAL;
359 }
Mauro Carvalho Chehabc5287ba2005-07-15 03:56:28 -0700360
Mauro Carvalho Chehab001abc92005-08-01 21:11:38 -0700361 /* It seems that tea5767 returns 0xff after the 5th byte */
362 if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) {
Michael Krufky8d0936e2007-08-27 21:24:27 -0300363 printk(KERN_WARNING "Returned more than 5 bytes. It is not a TEA5767\n");
Mauro Carvalho Chehab001abc92005-08-01 21:11:38 -0700364 return EINVAL;
365 }
366
Michael Krufky8d0936e2007-08-27 21:24:27 -0300367 printk(KERN_WARNING "TEA5767 detected.\n");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700368 return 0;
369}
370
Michael Krufky8d0936e2007-08-27 21:24:27 -0300371static int tea5767_release(struct dvb_frontend *fe)
Michael Krufkydb8a6952007-08-21 01:24:42 -0300372{
Michael Krufky8d0936e2007-08-27 21:24:27 -0300373 kfree(fe->tuner_priv);
374 fe->tuner_priv = NULL;
375
376 return 0;
Michael Krufkydb8a6952007-08-21 01:24:42 -0300377}
378
Michael Krufky8d0936e2007-08-27 21:24:27 -0300379static int tea5767_get_frequency(struct dvb_frontend *fe, u32 *frequency)
380{
381 struct tea5767_priv *priv = fe->tuner_priv;
382 *frequency = priv->frequency;
383 return 0;
384}
385
386static struct dvb_tuner_ops tea5767_tuner_ops = {
387 .info = {
388 .name = "tea5767", // Philips TEA5767HN FM Radio
389 },
390
391 .set_analog_params = set_radio_freq,
392 .sleep = tea5767_standby,
393 .release = tea5767_release,
394 .get_frequency = tea5767_get_frequency,
395 .get_status = tea5767_get_status,
Michael Krufky0f838f82007-06-06 16:17:17 -0300396};
397
Michael Krufky8d0936e2007-08-27 21:24:27 -0300398struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe,
399 struct i2c_adapter* i2c_adap,
400 u8 i2c_addr)
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700401{
Michael Krufkydb8a6952007-08-21 01:24:42 -0300402 struct tea5767_priv *priv = NULL;
403
404 priv = kzalloc(sizeof(struct tea5767_priv), GFP_KERNEL);
405 if (priv == NULL)
Michael Krufky8d0936e2007-08-27 21:24:27 -0300406 return NULL;
407 fe->tuner_priv = priv;
Michael Krufkydb8a6952007-08-21 01:24:42 -0300408
Michael Krufky8d0936e2007-08-27 21:24:27 -0300409 priv->i2c_props.addr = i2c_addr;
410 priv->i2c_props.adap = i2c_adap;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700411
Michael Krufky8d0936e2007-08-27 21:24:27 -0300412 memcpy(&fe->ops.tuner_ops, &tea5767_tuner_ops,
413 sizeof(struct dvb_tuner_ops));
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700414
Michael Krufky8d0936e2007-08-27 21:24:27 -0300415 tuner_info("type set to %s\n", "Philips TEA5767HN FM Radio");
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700416
Michael Krufky8d0936e2007-08-27 21:24:27 -0300417 return fe;
Mauro Carvalho Chehab586b0ca2005-06-28 20:45:21 -0700418}
Michael Krufky8d0936e2007-08-27 21:24:27 -0300419
420
421EXPORT_SYMBOL_GPL(tea5767_attach);
422EXPORT_SYMBOL_GPL(tea5767_autodetection);
423
424MODULE_DESCRIPTION("Philips TEA5767 FM tuner driver");
425MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
426MODULE_LICENSE("GPL");